Steel retainer for submarine hammer drills



Jim. 17, 1928.

- c. c. HANSEN swam. RETAINER FOR susmamz HAMMER mums 2 Sheets-Sheet 1 Filed June 29. 1926 mvszvroz; de 6 anaen. 31% I I 3Y5 TORNEY.

Jan. 17, 1928.

c. c. HANSEN STEEL RETAINER FOR SUBMARINE HAMMER DRILLS Filed June 29. 1926 2 Sheets-Sheet 2 I //////////A //Av/// U .J Q QQ 6 Patented Jan. 17, 1928.

UNITED STATES nasal-w rATENT OFFICE.

on'aanns c. nansnn, or nasron, rnn'nsrnvnnm, assronon TO in'onnsonnnann COMPANY, or JERSEY CITY, new .rnnsnr, a eosronnrron or new JERSEY.

STEEL RETAINER FOR SUBMABINE HAMMER DRILLS.

Application filed June 29,

This invention relates to submarine harn- Iner drills, in which a fluid operated rock drill of the hammer type 1s adapted to be lowered and submerged for submarine drilling, as disclosed in my copending application, Serial No, 52,136, tiled August 2%, 1925, now Patent 1,610,372. 7

The present invention is, concerned with the drill steel holder or retainer for retaining the drill steel in the drill and the objects of the invention are to secure an etlicient steel holder within the hell or exhaust chamber of the drill, which will not work loose and release the steel durin drilling operations and is conveniently and readily adjusted from the drill barge or from any convenient point at the surface.

A preferred form of the invention is shown in the drawings, in which Figure l is a side elevation of so much of a submarine hammer drilling element or drilling frame as will serve to illustrate the invention, v

Figure 2 is an enlarged detail sectional elevation of a portion of the front head of the drill and the hell or exhaust chaniiber showing the steel holder clamps or jaws closed around a. collared steel,

Figure 3 is a fragmentary detail sectional view showing the jaws open,

Figure 4i is a detail view similar to Figure 2 showing a modification in which a lugged steel is used, and

Figure 5 is a detail horizontal sectional view of Figure 4 taken on the line 5-6 looking upwardly in the direction of the arrows.

Referring to the drawings, a portion of the drilling element or drilling frame it. is shown in Figure 1 and. this drilling frame carries the fluid actuated hammer drill ll having the cylinder (l, front head 1) and hell or exhaust chamber E. The hammer drill may be mounted. on the drilling frame in any suitable manner, i u this instance being shown mounted by means of the plates or bracing members F and G. It is to be understood that in the operation of drilling, the entire drilling frame or rock drill is lowered into the water asdisclosed and de scribed in detail in my aforesaid copending application. Pressure fluid supplied for the operation of the rock drill through the pipe d cleansing water for the hollow 1926. Serial No. 119,425.

drill steel J 01' K is supplied through the pipe L.

In Figure 2 a collared steel is shown with an appropriate chuck therefor and in Fig are a a lugged steel is shown withan appropriate chuck. In both instances the rock drills are shown provided with anvil blocks 0 for purposes of illustration and the ex haust from the rock drill passes through the exhaust passage P into the bell E or exhaust chamber which prevents the water from entering the rock drill itself. Rotation is applied to the drill steel by suitable means, in this instance the chuck in Figure being provided with the gear Q meshmg with the pinion it on the vertical shaft S which is guided in the bearing T and extends to the surface or to the upper portion of the drilling element and is adapted to be rotated by independent motor (not shown). In Figure tthe gear Uin the chuck meshes with the pinion It of the shaft S. Since the particular construction of the chucks shown in Figures 2 and 4 form no part of the present invention, they need not be further described.

i Vithii'i the bell E are pivoted two similar clamps or jaws a, which are adapted to close around the drill steel preferably by their own weight, and may be opened or rocked backwardly on their pivots by suitable means extending outside the bell and having operative connections extending to the surface or to a convenient point for manual manipulations In this instance the pivot pins 6 are in the. form of bolts having the heads 0 and squared shanks which pass through the squared socket portions 6 of the aws. Bushings are preferably provided in the seats formed in the walls of the bell and arms g are held on the pivot pins out side the shell by means of the nuts h. The arms g extend towardeach other and their inner ends are connected by the rods j to the point A; preferably at the central portion of the lever 0 pivoted at the point p above the arms 9 to a convenient point on the frame. The outer end 9 of the lever 0 may be connected to the rope or cable 7 which. extends to the surface or to a convenient pointfor hand manipulation.

In the operation of the apparatus, the lever 0 is pulled upwardly or backwarclly to enable the drill steel J or K to be inserted, in

the chuck. By loosening the lever 0 the weight of the clamps is sutlicient to cause them to close above the shank of the steel so that the collar a on the drill steel shown in. Figure 2 cannot pass beyond the clamps. In the construction shown in Figure a double clamping or retaining means are provided because the lugs 25 of the steel are held within the chuck as well as being prevented from passing beyond the clamps. The drilling element of the rock drill may he raised from the water leaving the steel in the hole by loosening the clamps and the rock drill may be located upon the steel and clamped thereto again lily proper manipulation of the clamps.

I claim:

1. In a submarine hammer drill, the combination of a front head and bell, and a drill steel retainer comprising upwardly opening retaining. jaws pivotally mounted within the bell and adapted to clamp and release a drill steel, pivoted arms located side by side outside the bell and extending inwardly toward each other for rocking said jaws upwardly and downwardly about their pivots, and a coimection extending from said arms to the surface for Operating said arms, said connection being adapted to be pulled upwardly for disengaging the jaws and released for clamping the jaws.

2. In a submarine hammer drill, the combination of a front head and bell, and a drill steel retainer comprising upwardly and downwardly swinging retaining j awe pivot ally mounted within the bell and adapted to clamp and release a drill steel, pivoted arms lo-ated at one side externally to the hell and having their free ends extending inwardly toward each other for rocking said jaws about their pivots, a pivoted lever, rods connecting the lever and the said arms, and operating means connected to the lever and extending to the surface for manual manipulation.

In a submarine hannner drill, the combination of a front head and hell, and a drill steel retainer comprising upwardly o iening and downwardly closing retaining pivotally mounted within the bell and adapt ed to clamp and release a drill steel, pivoted arms located outside the bell and having their free ends extending ii'nardly toward each other for rocking said jaws about their pivots, a lever pivotally mounted at one end above the said arms, rods conlleeting the inner free ends of mid arms to the central portion of the lever, and a connection extending from the outer free end of said lever to the surface for opening said jawsby lifting the lever, and permitting the jaws to ClOSTQ upon lowering the lever.

In testimony whereof I have signed this;

specification.

CHARLES C. HANSEN.

aws 

